A48 inch by 36 inch poster is reduced to an image that is 8 inch by 6 inch in size to be used for a flyer. what is the scale factor? a. 3/2 b. 1/6 c. 1/8 d. 6 given that measure of arc af = 100º, arc = bd = 154º and arc ad = 40º. what is the measure of ∠ aed? a.13 b.53 c.26 d.40 what is dc if ac = 10 cm, bc = 6 cm, and ec = 12 cm? a.5 b.20 c.12 d.4

A 48 inch by 36 inch poster is reduced to an image that is 8 inch by 6 inch in size to be used for a flyer. What is the scale factor?

48/8 = 6 and 36/6 = 6
so SF = 6

 
D. 6



Given that measure of arc AF = 100º, arc = BD = 154º and arc AD = 40º.

What is the measure of ∠ AED?

<BED = 1/2(154 + 100) = 127°
<AED = 180° - 127° = 53°

Anwser

B.53


What is DC if AC = 10 cm, BC = 6 cm, and EC = 12 cm?

Lets DC = x
so 
10 * 6 = 12x
60 = 12x
x = 5

A.5

5 cm

step-by-step explanation:

the triangles are similar. therefore the corresponding sides are in proportion:

              cross multiply

            divide both sides by 32